Insulation



May 26, 1931. F. R. LESLIE 1 ,806,946

INSULATION Fild Aug. 26. 1929 INVENTOR Frank 7?. Leslie ATTORNEY Patented May 26, 1931 UNITED STATES FRANK It. LESLIE, OF WHITE BEAR LAKE, MINNESOTA INSULATION Application filed August 26, 1929. Serial No. 388,371.

My invention relates to improvements in insulation adapted particularly to be supported between studdings or beams, as in house construction.

An object of my invention is to provide an insulation made of corrugated board, with a plurality of boards to form intermediate air spaces, so put together and constructed that they may be delivered in a fiat .10 condition, but which in use may be conveniently fitted between the studdings to form connected insulating boards with intermediate air space.

I am aware that it is old to construct an insulation of sheets of corrugated board to fit between studdings and with air spaces between the sheets, but where such form of insulation has been used that is already built up ready for insertion between the studdings and the edges of the board secured together, there is an inconvenience and expense in connection with shipping and handling this insulation. As the sheets are not in a flat position, there is a lack ofadjustability in fitting the material between the studdings, and other objections, not existing in my construction.

These and other features of my invention will be more specifically set forth in the following description and the accompanying drawings, wherein:

Figure 1 is a face View of my invention made up of two sheets of corrugated board before the sheets have been bent as in use.

Figure 2 is a section on line 22 of shown partially bent for placement in use and illustrating its adaptability to variations in widths of supporting studs.

Referring to the drawings in detail, and using two sheets of corrugated board, I make the sheet 2, which constitutes the rear sheet in use, longer than the superimposed sheet 3. The sheet 2 is formed with bending lines t some distance inside of each edge. The 5 sheet 3 is similarly formed with bending lines 5 closer to theedge of the sheet 3 than the bending lines 4 are to the edge of the sheet 2. The two sheets are placed together with adjacent edges in line and secured as V by stitching 6 between the bending lines and the adjacent edges of the sheets, the edges of which are in alinement. hen the sheets are thus fastened together, the opposite end of the sheet 3 lies some distance inside of the adjacent edge of the sheet 2 and those edges are left unsecured. When thus secured together, as shown in Figure 2, the bending line 5 upon the stitched side of the sheet 3 will stand outside of the bending line 4 of the sheet 2 and upon the unconnected portion of the sheets. The bending line 5 of sheet 3 will stand inside the bending line 4 of the sheet 2. When the sheets are secured together as shown in Figure 2, they are ready for shipment as flat material. When it is desired to secure the sheets in in sulating position between the studs 7, the edges are bent as shown in Figure 3 into alinement with each other and with the studs, and then fastened as by fastening means 8 to the studs. The fact that the sheets are made up in the relative position and arrangement shown in Figure 3, permits their being bent to hold the sheets in separated position, as shown in Figure 3, and also by reason of the fact that when placed in position, one side of the sheets is unconnected, there is a certain latitude permitted in bending away from a true right-angled bending, as indicated in Figure 4, to permit an accommodation to slight variations in distances between studs, a result not possizle where the sheets of corrugated board are built up in a thoroughly secured position along both edges, ready for insertion.

A particular advantage of my invention is the fact that the material may be shipped in a flat condition, making shipment much more convenient and satisfactory, and making it much easier to protect the material in shipment and in handling.

I claim:

1. An insulation consisting of a plurality of sheets of superimposed board of varying b Widths and with the edges of the sheets on 0 one side in alinement when positioned together, means for securing the sheets to gether along the aligning edges, with the sheets unsecured at the opposite edges, and bending lines upon the sheets varying distances apart upon adjacent sheets, whereby the edges of the sheets may be bent into alinement holding the central portions of the sheets separated.

2. An insulation consisting of a sheet of corrugated board, a superimposed similar sheet of shorter width, the two sheets being placed together with the edges upon one side in substantial alinement, means for securing together the aligning edges of the sheets, leaving-the other edges of the sheets unsecured, bending lines upon the wider sheet a certain distance inside each edge, and similar bending lines upon the narrower sheet, positioned insidethe edges a less distance away than the bending line upon the wider sheet, for the purpose set forth.

In testimony whereof I affix my signature.

FRANK R. LESLIE. 

